My flat is in Sant Antoni area, 5 minutes from the city center and Plaza España. Good conections from/to airport, train and bus stations. Well equipped. Nice terrace.

What your guests will love about your neighborhood

My flat is located in one of coolest area in Barcelona at the moment:
https://tourismwithme.com/sant-antoni-is-trendy-neighbourhood-in-barcelona
http://www.huffingtonpost.com/smartertravel/the-worlds-most-hipster-h_b_7936054.html

Lots of nice cafés, restaurants and bars . There is a market square within a few minutes walk for fresh food plus of course regular food stores basically just down the stairs from the apartment.